JP6343668B2 - Jaw crusher, crushing plant and crushing method - Google Patents

Description

  The present invention relates to a jaw crusher suitable for crushing mineral materials, a processing plant, and a crushing method.

  The function of the jaw crusher uses the force to compress the rock. An eccentric shaft is attached to the jaw crusher main body, and a movable jaw that moves eccentrically with respect to the fixed jar, that is, a pitman is connected to the eccentric shaft. In order to operate the jaw crusher pitman, two types are mainly known. In the pitman operating mechanism, two toggle plates (so-called double toggle) or one toggle plate (so-called single toggle) is used. It has been.

  In the double toggle type jaw crusher, an eccentric shaft is connected between two toggle plates, and one end portion of the pitman (for example, a lower end portion in a brake crusher) is operated, and the other end crusher of the pitman is operated. It is pivotally supported by the main body. In the so-called overhead pivot type double toggle crusher, the rotation axis of the upper end of the pitman is located on the bisector of the crushing chamber, and the stroke above the stroke of the conventional brake crusher is above the crushing chamber. And the stroke is in a direction perpendicular to the fixed jaw. The stroke is in the form of a large arc.

  A single toggle crusher is simpler than a double toggle crusher. In the single toggle type crusher, one end of the pitman is pivotally supported on the crusher body via an eccentric shaft, and the other end of the pitman is pivotally supported on the crusher body via a toggle plate. When the upper end of the pitman is pivotally supported by an eccentric shaft (overhead eccentric crusher), the movable jaw has an almost circular shape in the upper portion of the crushing chamber because it is in the vicinity of the eccentric shaft. Furthermore, the stroke at the bottom of the crushing chamber is an elongated ellipse, but its motion shape becomes closer to a circle as it goes upward in the crushing chamber.

  In the single toggle crusher, there is a problem that a strong stroke in the upper part and the central part of the crushing chamber is shortened depending on the shape of the operation shape. Most of the compression operation is directed diagonally downward or upward. The amount of crushing stroke required to break a single stone is high due to the short stroke, and the short stroke limits processing capacity, and before substantial crushing, the surface of the material subject to crushing Only leads to crushing. Fine materials are not of economic interest and the production of fine materials results in unnecessary energy consumption. The direction of the stroke is not optimal at the bottom of the crushing chamber, but is directed upward and the material undergoing crushing moves vertically over the wear surface. Large quantities of stone that require relatively long compression distances are crushed at the top of the crushing chamber. The stroke length at the top of the known crusher is small relative to the stone size. Since the stroke is short in the upper part of the crusher crushing chamber, a large number of strokes are required before a large stone breaks. The undesired stroke direction wears the jaws more than the stroke perpendicular to the bisector of the crushing chamber.

  In a double toggle crusher, the shape and direction of the stroke is better than those in a single toggle crusher. On the other hand, the stroke is smaller in the upper part than in the lower part of the crushing chamber, and therefore the upper part of the crushing chamber tends to be a part that limits the processing capacity.

As the jaws wear, the bite angle in the crushing chamber increases and, in some applications, the crusher throughput can be reduced and substantially reduced.

  GB 275100 shows a lithotripter having a fixed crushing jaw and a movable crushing jaw driven by an eccentric. This movable jaw hangs on a pivot that can move horizontally on the side.

British Patent No. 275100

Abstract

  The present invention aims to create an alternative crusher that can overcome or at least mitigate the disadvantages associated with known crushers.

  According to the first exemplary embodiment of the present invention, a fixed jaw and a movable jaw are provided, a crushing chamber is formed between the members, and the crushing chamber is opened at an upper portion thereof. A wear part is provided, the movable jaw is provided with a pitman and a second wear part, and the crushing chamber comprises an upper section, an intermediate section and a lower section, each having an equal height, and The pitman is pivotally attached to an eccentric shaft and at least one slide member, and the at least one slide member slides in a direction substantially perpendicular to a vertical center line of the crushing chamber. A configured jaw crusher is provided.

  Preferably, a substantially horizontal line passing through the center of the eccentric shaft passes through the middle section of the crushing chamber.

  Preferably, the crushing chamber is divided into two parts of equal height by a substantially horizontal line passing through the center of the eccentric shaft substantially passing through the center line of the crushing chamber.

  Preferably, a substantially horizontal line passing through the center of the eccentric shaft passes through the position of the at least one slide member.

  Preferably, the slide member is configured to receive both compressive force and tension in the vertical direction.

  The at least one slide member is configured to slide between a lower slide surface and an upper slide surface facing the slide member, and a linear movement path of the pitman at a connection portion of the slide member It is preferable that it is comprised so that it may maintain.

  The slide member is arranged to move with respect to the pitman or the side plate of the jaw crusher, and a fixing member connected to the slide member is connected corresponding to the side plate or the pitman. Preferably it is.

  The vertical center line of the crushing chamber is preferably in the direction of gravity.

  It is preferable that the 1st slide member is arrange | positioned between the vertical direction center line of the said crushing chamber, and the said eccentric shaft.

  It is preferable that the jaw crusher further includes a second slide member disposed behind the eccentric shaft when viewed from the direction of the first slide member.

  Preferably, the jaw crusher includes a third slide member disposed between the eccentric shaft and the pitman.

  It is preferable that the third slide member is configured to shift the eccentric movement of the eccentric shaft to the horizontal movement of the pitman.

  It is preferable that the jaw crusher includes a crank connected between an eccentric portion of the eccentric shaft and a fixing member of the first slide member or the second slide member.

  A rotatable eccentric element such as an eccentric sleeve is pivoted between the pitman and an eccentric portion of an eccentric shaft located at a front end portion of the pitman adjacent to the crushing chamber, and the eccentric element and the eccentric shaft It is preferable that the eccentricity and the rotation speed are set to be equal so that the linear movement of the pitman is realized.

  The slide member is preferably disposed behind the eccentric shaft when viewed from the direction of the crushing chamber.

  Preferably, the jaw crusher comprises a safety device with upper and lower hydraulic cylinders having specific safety pressure limits set to vertically support the at least one slide member.

  The first distance between the eccentric shaft and the first slide member is set to be substantially larger than the second distance between the vertical center line of the crushing chamber and the first slide member. Preferably it is.

  Preferably, the jaw crusher includes a setting and jaw angle adjusting device, and the adjusting devices are located at an upper end portion and a lower end portion of the fixed jaw.

  According to a second exemplary aspect of the present invention, there is provided a crushing plant comprising a jaw crusher according to any embodiment of the present invention.

  According to a third exemplary aspect of the present invention, a method of crushing mineral material in a jaw crusher or crushing plant, the jaw crusher or crushing plant comprising a fixed jaw and a movable jaw, crushing between these members. A chamber is formed, the crushing chamber is open at an upper portion thereof, the fixed jaw is provided with a first wear portion, and the movable jaw is provided with a pitman and a second wear portion, The crushing chamber includes an upper section, an intermediate section, and a lower section, each having an equal height, and the pitman is mounted on an eccentric shaft and at least one slide member, and is vertically centered in the crushing chamber. Less of the movement mechanism in the jaw crusher in a direction substantially perpendicular to the line By also sliding the single slide member, in the crushing chamber, the crushing stroke substantially linearly, so that faces the material to be crushed, a method is provided.

  In the movement mechanism of the jaw crusher, it is preferable that a substantial horizontal line passing through the center of the eccentric shaft passes through an intermediate section of the crushing chamber.

  Preferably, the slide member is used to receive both compressive force and tension in the vertical direction under different load conditions.

  Preferably, the at least one slide member is slid between a lower slide surface and an upper slide surface facing the slide member, and a linear movement path of pitman is maintained in a connection region of the slide member.

  It is preferable to move the slide member relative to the pitman or the side plate of the jaw crusher.

  It is preferable that the slide member is interlocked with the eccentric movement of the eccentric shaft by a crank.

  The setting of the jaw crusher and the jaw angle are preferably adjusted by an adjusting device located at the upper end and the lower end of the fixed jaw of the fixed jaw. The adjusting device is preferably located between the jaw crusher main body (front end) and the wear portion of the fixed jaw. It is preferred that an overload protection device is incorporated in the adjusting device.

  According to initial tests, the production capacity of the crusher according to the present invention is clearly higher than the conventional single toggle crusher. According to the rough pile, the wear of the wear part is 1/4 compared with the wear of the prior art. The critical jaw angle can be widened by a good path of movement of the movable jaw.

  The power utilized by the juicing crusher per amount of mineral material fracture can be less than the power in known applications. This is because less energy is utilized in a crushing event that vertically moves the material undergoing crushing between each jaw. Since most of the power can be used to crush the mineral material rather than using the relative vertical movement of each jaw to crush the material, the crushing capacity obtained with the same crushing power can be greater.

  The moving mechanism enables an optimal stroke in a direction perpendicular to the vertical center line of the crushing chamber. At the same time, the same stroke is almost or completely constant in the region of the entire crushing chamber and therefore also provides a sufficient stroke for the upper and central part of the crushing chamber. At the top of the crushing chamber, the stroke is increased compared to a double toggle crusher, increasing the possibility of crushing large chunks. And fewer work cycles are required, increasing the production capacity of the upper part of the crushing chamber. The entire crushing chamber can actually operate more uniformly. Since the stroke is almost perpendicular to the bisector of the crushing chamber, wear on each jaw is reduced compared to conventional crushers. In addition to adjusting the fixed jaw settings, the jaw angle can be varied as desired without additional members by adjusting the position of the fixed jaws at the top and / or bottom. At the same time, the jaw angle can be kept constant during the entire life of each jaw. The jaw angle can be adjusted to be suitable for each rock material.

  The position of the flywheel is substantially lower in the present invention than the position in the prior art, reducing the overall height of the crusher and crushing plant. Because the crusher is more compact, it can also be fed from the direction of the movable jaws (not the fixed jaws). This condition is advantageous over a movable jaw where a large stone against the movable jaw can produce a greater force on the crusher structure. .

  Since the moving shape becomes more optimal, the wear of the crusher and the wear member is reduced, the production capacity is increased, and the energy consumption is reduced.

  The smaller crusher size allows the design flexibility of the crushing plant to be improved than before (the plant becomes more compact).

  Various embodiments of the invention have been illustrated or illustrated in connection with only certain aspects of the invention. Those skilled in the art will appreciate that any embodiment of a particular aspect of the invention can be applied to the same aspect of the invention, as well as to other aspects only, or even in combination with other embodiments. .

  The invention will now be described by way of example with reference to the accompanying schematic drawings.

A side view of a crushing plant suitable for crushing mineral materials is shown. 1 shows a side view of a moving mechanism according to a first preferred embodiment of the present invention. FIG. FIG. 6 shows a side view of a moving mechanism according to a second preferred embodiment of the present invention. FIG. 6 shows a side view of a moving mechanism according to a third preferred embodiment of the present invention. FIG. 6 shows a side view of a moving mechanism according to a fourth preferred embodiment of the present invention. Fig. 4 shows an alternative crusher similar to the jaw crusher of Fig. 3; Figure 6 shows an alternative crusher similar to the jaw crusher of Figures 4 and 5; FIG. 10 is a side view of a moving mechanism according to a fifth preferred embodiment of the present invention. 9 shows a cross section of a preferred eccentric arrangement of the moving mechanism shown in FIG. Fig. 3 shows an example of a safety device according to a first preferred embodiment of the invention provided with the movement mechanism of Fig. 2;

Detailed explanation

  In the following description, like numerals indicate like elements. It should be understood that the drawings shown are not to scale exactly and that the drawings are primarily intended to illustrate particular exemplary embodiments of the present invention.

  FIG. 1 shows a crushing plant 200 comprising a mineral material processing device, namely a jaw crusher 100. The crushing plant 200 includes a feeder 103 that feeds the material to the jaw crusher 100 and a belt conveyor 106 that transports the further crushed material from the crushing plant.

  The belt conveyor 106 shown in FIG. 1 comprises a belt 107 configured to pass around at least one roller 108. The crushing plant 200 also includes a power source and a control unit 105. The power source may be, for example, a diesel engine or an electric motor that supplies energy to the processing unit and the hydraulic circuit.

  The feeder 103, the crusher 100, the power source 105, and the conveyor 106 are connected to a main body 101 of the crushing plant, and the main body in the present embodiment further includes a track base 102 that moves the crushing plant 200. The crushing plant may also be fully or partially utilizing wheels or may be movable using leg members. Alternatively, the crushing plant may be movable / tractionable, for example by a truck or other external power source. Alternatively, the crushing plant may be a fixed plant.

  The mineral material may be, for example, mined rock, or asphalt or building demolition waste such as concrete or brick. In addition to the above, the crushing plant may be a stationary plant.

  The embodiment of the moving mechanism of the jaw crusher 100 shown in FIGS. 2 to 10 can be used in the crushing plant 200 of FIG. 1, for example.

  The jaw crusher 100 shown in FIGS. 1 to 10 includes a fixed jaw and a movable jaw, and these members form a crushing chamber 3 having an upper portion opened therebetween. The first wear part 1 is connected to the fixed jaw, and the second wear part 2 is fixed to the pitman 4. 2 to 10, the fixed jaw is represented by a wear portion 1 connected to the fixed jaw, and the movable jaw is represented by a wear portion 2 connected to a pitman 4. The crushing chamber 3 comprises an upper section 5, an intermediate section 6 and a lower section 7, each having an equal height h. The movement mechanism of the jaw crusher is such that the pitman 4 is connected to a first rotatable eccentric shaft 8 and secondly slides in a direction substantially perpendicular to the vertical vertical center line 10 of the crushing chamber 3. This is based on being connected to at least one slide member 9 configured to do so. A substantially horizontal line 11 passing through the center of the eccentric shaft 8 preferably passes through the middle section 6 of the crushing chamber 3.

  A substantially horizontal line 11 passing through the center of the eccentric shaft 8 is preferably split into two parts at equal height H by passing through the horizontal center line 3 ′ of the crushing chamber 3.

  The eccentric shaft 8 is rotatably mounted on one side as a first support point on the pitman 4 and on the other side on a body (not shown) of the jaw crusher. By using the eccentricity of the eccentric shaft, a stroke between the pitman 4 and the movable jaw is generated. The eccentricity of the eccentric shaft 8 is preferably equal to half the stroke length of the movable jaw.

  The pitman 4 is further supported by the main body 2 at least at the second support point by at least one slide member 9. The at least one slide member 9 is preferably configured to slide (relative to the crusher body) between a lower slide surface 12 and an upper slide surface 13 facing the slide member 9. The upper slide surface restricts the upward movement of the slide member 9, and the lower slide surface restricts the downward movement of the slide member 9, thereby forming a linear movement path of the pitman at the connecting portion of the slide member. maintain.

  The slide member 9 receives both compressive force and tension under different load conditions, i.e. depending on the position of the crushable material in the upper or lower position of the crushing chamber 3 and the resulting force therefrom. , Configured to receive forces directed upward and downward (see also FIG. 10).

  The slide member 9 is preferably located horizontally as close as possible to the wear surface of the wear part 2 of the pitman 4, in which case a very short vertical movement can be obtained with respect to the movable jaw of FIG. . Decreasing the vertical movement of the pitman wear surface relative to the fixed jaws reduces the power required by the crusher if the material to be crushed should not be worn vertically between each jaw.

  The closer the connecting portion of the slide member 9 to the pitman 4 is to the wear surface of the second wear portion 2, more preferably the vertical vertical center line 10 of the crushing chamber 3, the closer the eccentric shaft 7 is to the wear surface. , Crusher can be shortened. When the eccentric shaft and, if necessary, the flywheel connected to the eccentric shaft can be made lower than a typical single toggle crusher, the crusher can be lowered, and a compact crusher Can be made.

  The vertical / vertical direction center line 10 of the crushing chamber 3 is preferably in the direction of gravity as shown in FIGS. Thereby, for example, when the facing wear parts 1 and 2 in the fixed jaw and the movable jaw have equal inclination angles in the opposite directions with respect to the vertical line, the wear parts 1 and 2 are crushed so as to wear equally. The chamber 3 can be configured. Generally, the vertical vertical center line 10 of the crushing chamber 3 is in a direction that bisects the nip angle in the crushing chamber 3, that is, in the direction of the bisector of the crushing chamber. The figures in this description are depicted in a preferred state when the bisector of the crushing chamber is in the direction of gravity.

  In the crushing of mineral materials, the crushing chamber opening actually has a certain size, for example for feeding stone into the crushing chamber. By adjusting the jaw angle of the crushing chamber, the material to be crushed is held in place, and efficient crushing is achieved so that it does not move upward on the surface of the wear part fixed to the fixed jaw and pitman. To do. When crushing with a crusher according to a preferred embodiment of the present invention, where the jaw angle can be increased in some cases compared to the prior art, the pitman 4 is substantially perpendicular to the vertical center line 10 of the crushing chamber 3. Can be moved to. The crusher can be lowered as required.

  The setting of the jaw crusher and the jaw angle can be adjusted by adjusting each device (not shown), and these devices are preferably located at the upper and lower ends of the fixed jaw. These adjusting devices preferably incorporate an overload protection device.

  The moving mechanism of the movable jaw allows an optimum stroke in a direction perpendicular to the vertical center line 10 of the crushing chamber 3. In the embodiment shown in FIGS. 2 to 8, the stroke is substantially constant, and in FIGS. 3 to 9, it is further a straight line in the entire region of the crushing chamber.

  FIG. 2 shows a side view of the moving mechanism according to the first preferred embodiment. The shaft 14 or a corresponding fixing member connected to the slide member 9 on one side is connected to the pitman 4 on the other side or to the side plate of the crusher body. Correspondingly, the slide member 9 moves relative to the side plate or pitman. It is preferable that the slide member 9 is movable in the hole 15 formed in the side plate or pitman. The hole preferably comprises two sliding surfaces 12 and 13 facing each other, configured to be close to the sliding member 9.

  The moving path 16 of the movable jaw 2 in the crushing chamber has an elliptical shape in FIG. 2, and the eccentric shaft 8 raises and lowers the rear end portion of the pitman where the eccentric shaft is located in FIG. The vertical axis of the movement path 16 is perpendicular to the vertical center line 10 of the crushing chamber 3. When the slide member 9 is as close as possible to the vertical centerline of the crushing chamber, the travel path 16 is most horizontal, and relative undesired vertical movement between the fixed and movable jaws is minimized.

  The position of the eccentric shaft in the form of a substantially horizontal line 11 passing through the middle section 6 of the crushing chamber 3 creates a symmetrical movement path 16 of the movable jaw in the upper section 5 and the lower section 7 of the crushing chamber 3.

  In FIG. 2, the eccentric shaft 8 is optimally configured to rotate clockwise, i.e. the eccentric part of the eccentric shaft moves upward on the side of the crushing chamber 3 indicated by the arrow below the eccentric shaft. The rotation direction of the eccentric shaft 8 generates a counterclockwise direction of the movement path 16 together with the movement mechanism, and this direction is indicated by an arrow on the movement path.

  FIG. 3 is a side view of the moving mechanism according to the second preferred embodiment. A completely linear movement path 16 of the movable jaw is achieved with (at least) two slide members configured to slide in a direction substantially perpendicular to the vertical vertical centerline 10 of the crushing chamber. . The jaw crusher of FIG. 3 is in contact with two opposing slide surfaces at the rear end of the pitman 4 in addition to the first slide member 9 shown in FIG. The same additional slide member or second slide member 9 ′ and an additional third slide member 19 disposed between the eccentric shaft 8 and the pitman 4 are provided. The third slide member 19 is preferably arranged so as to slide substantially vertically. The second slide member is disposed behind the eccentric shaft when viewed from the direction of the first slide member. The first slide member 9 and the second slide member 9 ′ maintain the moving path of the movable jaw in a straight line, and hold the movable jaw in a correct position for moving it preferably horizontally. The first slide member 9 and the second slide member 9 'move with respect to the crusher side plate or with respect to the pitman. The first slide member and the second slide member receive both compressive force and tension under different load conditions, in other words, both upward and downward force depending on the position of the resulting crushing force. Is configured to accept.

  The third slide member 19 is configured to shift the movement of the eccentric portion to the movement of the pitman in a direction substantially perpendicular to the vertical vertical center line 10 of the crushing chamber. More specifically, the third slide member 19 is configured to shift the eccentric movement of the eccentric shaft to the horizontal movement of the pitman 4, and is preferably configured to eliminate the vertical movement component of the eccentric shaft 8. Yes. The third slide member 19 slides on the pitman side, and preferably slides in the opening 17 of the pitman. The pitman 4, preferably the opening 17, includes a third slide surface 18 and a fourth slide surface 18 ′ that are configured to face the third slide member 19 and to be in close proximity to the third slide member.

  The preferred position of all the sliding members 9, 9 ', 19 (and the eccentric shaft 8) is on a line 11 perpendicular to the vertical center line 10 of the crushing chamber 3, and in the vertical direction the horizontal center of the crushing chamber It exists in the height direction of the line 3 ′. Alternative positions for the first and second slide members are described in connection with FIGS.

  When a substantially horizontal line 11 passes through the support point of the pitman 4, preferably through the first slide member and the second slide member and through the intermediate section 6 of the crushing chamber 3, the first slide member and the second slide. The member receives a force directed toward the upper and lower areas and excludes separation from contact with the lower and upper surfaces of the first and second slide members.

  FIG. 4 is a side view of a moving mechanism according to a third preferred embodiment of the present invention. A complete linear movement path 16 of the movable jaw is achieved using the first slide member 9 and the second slide member 9 'as in FIG. The crushing movement of the movable jaw in FIG. 4 is performed by the eccentric shaft 8 and a crank mechanism including a crank 20 connected between the eccentric portion of the eccentric shaft and a fixed member such as the shaft 21 of the second slide member 9 ′. Produced. The crank mechanism is configured to shift the eccentric movement of the eccentric shaft to the horizontal movement of the pitman 4 and to block the vertical movement component of the eccentric shaft 8.

  The first slide member 9 and the second slide member 9 ′ maintain the moving path of the movable jaw in a straight line, and hold the movable jaw in the correct position. The first slide member 9 and the second slide member 9 'move with respect to the crusher side plate or with respect to the pitman. The first slide member and the second slide member receive both compressive force and tension under different load conditions, in other words, both upward and downward force depending on the position of the resulting crushing force. Is configured to accept.

  The preferred positions of the two slide members 9, 9 'and the eccentric shaft 8 are on a line 11 perpendicular to the vertical center line 10 of the crushing chamber 3, and in the vertical direction the horizontal center line 3' of the crushing chamber. Exists in the height direction. Alternative positions for the first and second slide members are described in connection with FIGS.

  The moving mechanism in FIG. 5 is basically the same as the moving mechanism in FIG. 4, but the crank 20 is fixed to the fixing member 14 of the first slide member 9 instead of the fixing member 21 of the second slide member 9 ′. Is pivotally supported. The same movement advantages as in FIG. 4 are achieved. Of course, the crank may be coupled to both the first slide member and the second slide member.

  6 and 7 show an alternative jaw crusher similar to the jaw crusher of FIGS. 3-5, wherein the jaw crusher is configured to slide in a direction substantially perpendicular to the vertical diagonal 10 of the crushing chamber. Provided with two slide members.

  In the example of FIG. 6, the first slide member 9 and the second slide member 9 ′ of the second embodiment of the jaw crusher are located at the same vertical height, but different vertical height levels from the eccentric shaft 8. Located in. In FIG. 6, further options for different heights of the slide member are indicated using dashed lines and indicated by reference numeral 9 ". The first slide member and the second slide member are When configured to slide in a direction substantially perpendicular to the vertical centerline of the crushing chamber, it may be located at a different vertical height level. The examples can also be applied with the third and fourth embodiments of the jaw crusher.

  In the example of FIG. 7, the first slide member 9 and the second slide member 9 'of the third embodiment of the jaw crusher are located at different vertical heights. In the example of FIG. 7, one of the slide members is located at the same height level as the eccentric shaft 8. The example height level described according to FIG. 7 can also be applied with the second embodiment of the jaw crusher.

  The fifth preferred embodiment of the moving mechanism shown in FIG. 8 comprises an additional eccentric element 22 such as an eccentric sleeve mounted around the eccentric part of the eccentric shaft 8, the eccentric element 22 being a crushing chamber or a second wear part. 2 is located at the front end of the pitman 4 adjacent to the pitman 4. The second eccentric element 22 is configured to rotate in the direction of rotation opposite to that of the eccentric shaft 8 (rotation device 23 in FIG. 9), as indicated by the arrow pointing in the opposite direction in FIG. The eccentricity and rotational speed of both eccentric elements 8 and 22 are preferably set equal to each other so that a complete linear and horizontal movement path 16 of the movable jaw is achieved.

  The two eccentric parts 8 and 22 and the second slide member 9 'combined with each other maintain the movement path of the movable jaw in a straight line and hold the movable jaw in the correct position. The second slide member 9 'moves relative to the side plate of the crusher or relative to the pitman. The combined two eccentric parts 8, 22 and the second slide member 9 'receive both compressive force and tension under different load conditions, in other words at the position of the resulting crushing force in the crushing chamber 3. It is configured to accept a force directed both upwards and downwards.

  FIG. 9 shows a cross section of an exemplary eccentric arrangement of the moving mechanism shown in FIG. The eccentric shaft 8 is pivotally attached to the main body such as the side plate 24 of the jaw crusher 100. First, the eccentric sleeve 22 is pivotally mounted around the eccentric portion 8 ′ of the eccentric shaft 8, and secondly, is pivotally mounted in the hole 4 ′ of the pitman 4. The rotating device 23 is connected to the pitman 4 and an eccentric sleeve 22 having an exemplary balanced weight 25.

  FIG. 10 shows overload safety devices 26, 27 provided in the movement mechanism of FIG. The safety device preferably has lower and upper hydraulic cylinders 26, 27 having specific safety pressure limits set to vertically support the slide member 9 via the lower and upper slide surfaces 12,13. Is provided. Typically, the resultant force of the crushing force occurs in the upper section 5 (for example a large stone) or the lower section 7 (for example a piece of metal or a mass of fine material) of the crushing chamber 3 and the slide member 9 (and / or the second The slide member 9 ') receives a high vertical force. In the example of FIG. 9, the material 28 lumps in the lower section 7 of the crushing chamber, and the lower hydraulic cylinder 26 supports the slide member 9 with a vertical force 29.

  The arrangement of the hydraulic cylinders 26 and 27 described above is such that the clearance between the slide member 9 (and / or the second slide member 9 ') and the lower surface 12 and between the upper surface 13 during normal operation. Is configured to maintain properly.

  According to another example of a safety device, the fixed shafts 14, 21 of the first slide member 9 and the second slide member 9 'are dimensioned so that a specific shear force is generated.

  According to the present invention, it is possible to create an extremely optimal movement path 16 of the movable jaw of the jaw crusher 100 from the viewpoint of the efficiency and wear of the wear portion. A substantially linear movement can be achieved, which movement is perpendicular to the vertical centerline of the crushing chamber and is equal in size throughout the crushing chamber. Sufficient stroke is achieved at the top of the crushing chamber so that larger stones are crushed to the final required compressive strain of about 0.2%. Large strokes in the lower section of the crushing chamber increase the production capacity of the crusher 100 and the crushing plant 200. A linear stroke perpendicular to the vertical center line of the crushing chamber will wear the wear part to a minimum.

  In each option of the above moving mechanism, one or two slides having the same slide direction are used. The slide preferably generates a bi-directional force. The horizontally moving slide preferably produces a downward and upward force. The slide and eccentric shaft are preferably located on a line through the middle section of the crushing chamber.

  FIG. 1 is very simple to use and can easily be implemented with a relatively good movement path 16 in the entire region of the crushing chamber 3. If the crushing chamber is very high, the stroke in the middle section 6 of the crushing chamber remains shorter than the stroke in the upper section 5 and the lower section 7. The first distance between the eccentric shaft 8 and the first slide member 9 is set to be substantially larger than the second distance between the vertical center line 10 of the crushing chamber and the first slide member 9. The If the first distance is greater than the second distance, the movement path is better.

  In the options of FIGS. 3 to 7, the moving path of the movable jaw is good, but for example, another shaft 21 is required. Since the movement of the movable jaw is linear and there is no swing movement of the pitman, it is preferable to easily balance the joke crusher.

  The configuration according to FIG. 8 is optimal in terms of operation. The movement is linear, ie perpendicular to the vertical center line of the crushing chamber and the stroke is equal in all areas of the crushing chamber 3. In addition, the crusher 100 can be well balanced by the two concentric eccentric elements 8, 22 rotating in opposite directions. Balancing a crusher with an 800 mm wide jar and two flywheels can be performed by placing approximately 10 kg mass on each flywheel and one 75 kg counterweight on the eccentric sleeve 22. it can. As a result, the fixed jaw can be firmly fixed to the movable crushing plant 200, and preferably, the side plate can be used as a load bearing part of the movable crushing plant.

  Due to the increase in production capacity, the crusher provided with the moving mechanism can be preferably operated as a second stage crusher. According to an example, the length of the opening of the crushing plant in the longitudinal direction of the crushing plant is 300 mm and the setting is 40 mm. With a nip angle of 24 degrees, the crushing plant 3 can only be about 600 mm high. In a movable assembly, this provides an advantage when the jaws are wide.

  The above description provides non-limiting examples of some embodiments of the present invention. It will be appreciated that the invention is not limited to the details presented to those skilled in the art, and that the invention may be practiced in other equivalent ways.

  Certain features of the embodiments disclosed above may be advantageously used without using other features. Accordingly, the foregoing description is considered as illustrative only of the principles of the invention and is not intended to limit the invention. Accordingly, the spirit of the invention is limited only by the accompanying claims.

Claims (20)

It has a fixed jaw and a movable jaw,
A crushing chamber (3) is formed between the members, and the crushing chamber (3) is open at the top,
The fixed jaw is provided with a first wear part (1), and the movable jaw is provided with a pitman (4) and a second wear part (2),
The crushing chamber comprises an upper section (5), a middle section (6) and a lower section (7) each having an equal height (h),
The pitman is pivotally attached to an eccentric shaft (8) and at least one slide member (9, 9 '),
Jaw crusher (100),
A substantially horizontal line (11) passing through the center of the eccentric shaft (8) passes through the middle section (6) of the crushing chamber (3) and positions the at least one slide member (9, 9 '). Street,
Wherein the at least one slide member (9, 9 ') is configured to slide in a direction substantially perpendicular to the vertical center line of said crushing chamber (10),
Further, the at least one slide member (9, 9 ') is configured to slide between a lower slide surface (12) and an upper slide surface (13) facing the slide member, and the It is configured to maintain the linear movement path of the pitman (4) at the connecting portion of the slide member,
Jaw crusher (100), characterized in that.   The substantially horizontal line (11) passing through the center of the eccentric shaft (8) substantially passes through the center line (3 ') of the crushing chamber so that the crushing chamber is in two parts of equal height (H). The jaw crusher according to claim 1, wherein the jaw crusher is divided.   Jaw crusher according to claim 1 or 2, characterized in that the slide member (9, 9 ') is configured to receive both compressive force and tension in the vertical direction. The slide member (9, 9 ') is arranged to move relative to the pitman (4) or relative to the side plate of the jaw crusher;
The fixing member (14) connected to the slide member is connected corresponding to the side plate or the pitman.
The jaw crusher according to any one of claims 1 to 3, wherein the jaw crusher is characterized by that.   Jaw crusher according to any one of claims 1 to 4, characterized in that the vertical center line (10) of the crushing chamber is in the direction of gravity.   The first slide member (9) is arranged between the vertical center line (10) of the crushing chamber (3) and the eccentric shaft (8), according to any one of claims 1-5. The jaw crusher according to claim 1.   The jaw crusher further comprises a second slide member (9 ') disposed behind the eccentric shaft (8) when viewed from the direction of the first slide member (9). The jaw crusher according to Item 6.   Jaw crusher according to claim 7, characterized in that the jaw crusher comprises a third slide member (19) arranged between the eccentric shaft (8) and the pitman (4).   Jaw crusher according to claim 8, characterized in that the third slide member (19) is configured to shift the eccentric movement of the eccentric shaft (8) to the horizontal movement of the pitman (4).   The jaw crusher is connected between the eccentric portion (8 ') of the eccentric shaft (8) and the fixing member (14, 21) of the first slide member or the second slide member (9, 9'). Jaw crusher according to claim 6, characterized in that it comprises a crank (20). A rotatable eccentric element (22) such as an eccentric sleeve is pivoted between the pitman (4) and an eccentric part (8 ') of an eccentric shaft located at the front end of the pitman adjacent to the crushing chamber (3). Has been
The eccentricity and rotational speed of the eccentric element (22) and the eccentric shaft (8) are set equal to achieve a linear movement of the pitman.
The jaw crusher according to any one of claims 1 to 3, wherein the jaw crusher is characterized by that. 12. The at least one slide member ( 9, 9 ') is arranged behind the eccentric shaft (8) when viewed from the direction of the crushing chamber (3). Jaw crusher as described.   Safety with the jaw crusher comprising upper and lower hydraulic cylinders (26, 27) having specific safety pressure limits set to vertically support the at least one slide member (9, 9 ') The jaw crusher according to claim 1, comprising a device. A first distance between the eccentric shaft (8) and the first slide member (9) is a second distance between the vertical center line (10) of the crushing chamber and the first slide member (9). characterized in that it is set to be substantially greater than the distance, jaw crusher of claim 6.   15. The jaw according to claim 1, wherein the jaw crusher includes a setting and jaw angle adjusting device, and the adjusting device is located at an upper end portion and a lower end portion of the fixed jaw. crusher.   Crushing plant (200), characterized in that it comprises a jaw crusher (100) according to any one of the preceding claims. A method for crushing mineral material in a jaw crusher (100) or a crushing plant (200), comprising:
The jaw crusher (100) or the crushing plant (200) includes a fixed jaw and a movable jaw, a crushing chamber is formed between the members, and the crushing chamber (3) is open at the top thereof, The jaw is provided with a first wear part (1), and the movable jaw is provided with a pitman (4) and a second wear part (2),
The crushing chamber comprises an upper section (5), a middle section (6) and a lower section (7) each having an equal height (h),
The pitman is pivotally attached to an eccentric shaft (8) and at least one slide member (9, 9 '),
A substantially horizontal line (11) passing through the center of the eccentric shaft (8) passes through the middle section (6) of the crushing chamber (3) and positions the at least one slide member (9, 9 '). Street,
In the crushing chamber, by sliding the at least one slide member (9, 9 ') of the moving mechanism in the jaw crusher in a direction substantially perpendicular to the vertical center line (10) of the crushing chamber Characterized in that the substantially linear crushing stroke comprises directing the material to be crushed;
Further, the at least one slide member (9, 9 ') is configured to slide between a lower slide surface (12) and an upper slide surface (13) facing the slide member, and the It is configured to maintain the linear movement path of the pitman (4) at the connecting portion of the slide member,
Method.   18. Method according to claim 17, characterized in that the sliding member (9, 9 ') is used to receive both compressive force and tension in the vertical direction under different load conditions. Wherein the moving the slide member (9, 9 ') to the relative or side plates of the jaw crusher the pitman (4) The method of claim 17 or 18.   A method according to any one of claims 17 to 19, characterized in that the slide member (9, 9 ') is interlocked with the eccentric movement of the eccentric shaft (8) by means of a crank (20).

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